Key changes in wl_backend.c:
- wl_atom_intern: call XInternAtom on XWayland display (was returning 0)
- Add wl_or_view struct to track override_redirect XWayland surfaces
- handle_xwayland_new_surface: composite OR surfaces via scene graph
- frame_create_toplevel/child: create real X11 windows on XWayland
- frame_destroy/configure: delegate to Xlib
- window_map/unmap/move/resize: fall through to Xlib for frame windows
- stacking_raise/lower: update scene graph + Xlib fallback
- event_flush/sync: call XFlush/XSync on XWayland display
- window_set_border/border_width/clear: delegate to Xlib
- window_get_rect: query XWayland geometry for non-toplevel windows
Note: frame creation via XWayland is a temporary bridge. The correct
architectural approach is native scene-buffer rendering with pixman.
Set a default XKB keymap on the headless keyboard device in
wl_display_open() so the keyboard has a keycode↔keysym mapping
available from startup.
Implement wl_keysym_to_keycode() by scanning the XKB keymap for the
first keycode that produces the given keysym; XKB keycodes equal
evdev+8 == X11 keycodes, so wKeyBindings are directly compatible.
Implement wl_keysym_from_keycode() as the reverse lookup.
Call wSetModifierMasks(Mod1Mask, Mod1Mask, Mod4Mask, 0) from
wl_screen_create_internals() so AltMask/MetaMask/SuperMask are
non-zero in Wayland mode, making modifier parsing in wXModifierFromKey
produce correct values.
Add wSetModifierMasks() to xmodifier.c/h as the non-X11 entry point.
Replace the four XKeysymToKeycode(dpy, ksym) call sites in
defaults.c, rootmenu.c, and usermenu.c with
wm_backend->keysym_to_keycode() so they work when dpy==NULL.
Smoke test: check for "XKB keymap set on headless keyboard" log line.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>